(19)
(11) EP 1 517 062 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
01.08.2007 Bulletin 2007/31

(43) Date of publication A2:
23.03.2005 Bulletin 2005/12

(21) Application number: 04255582.1

(22) Date of filing: 15.09.2004
(51) International Patent Classification (IPC): 
F16D 69/02(2006.01)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR
Designated Extension States:
AL HR LT LV MK

(30) Priority: 19.09.2003 US 666090

(71) Applicant: BorgWarner Inc.
Auburn Hills, MI 48326-2872 (US)

(72) Inventors:
  • Lam, Robert C.
    Rochester, Michigan 48306 (US)
  • Chen, Yih-Fang
    Lisle, Illinois 60532 (US)
  • Dong, Feng
    Rochester, Michigan 48306 (US)
  • Chavdar, Bulent
    Rochester, Michigan 48307 (US)

(74) Representative: Hedges, Martin Nicholas et al
A.A. Thornton & Co. 235 High Holborn
London WC1V 7LE
London WC1V 7LE (GB)

   


(54) High coefficient friction material with symmetrical friction modifying particles


(57) The present invention relates to a friction material comprising a primary layer material layer and at least a partial coating of symmetrically shaped friction modifying particles on at least one surface of the primary layer for use as an anti-shudder friction material.







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